The appearances of X-ray and MR imaging in osteochondral fracture of knee joint after acute injury
- VernacularTitle:膝关节外伤性骨软骨骨折的X线和MRI表现
- Author:
Tao ZHAO
;
Lei WENG
;
Yuhua YOU
;
Wei LIU
;
Xiaoguang CHENG
;
Hui QU
- Publication Type:Journal Article
- Keywords:
Fracture;
Knee joint;
Magnetic resonance imaging;
Radiography
- From:
Chinese Journal of Radiology
2000;0(11):-
- CountryChina
- Language:Chinese
-
Abstract:
Objective To evaluate the appearances of osteochondral fracture of the knee on X-ray and MR imaging. Methods Twelve patients with knee acute injury were examined with X-ray and MRI. The findings of MRI and X-ray were analyzed and reviewed, and the results of each patient were confirmed by arthroscopy and operation. Results Thirteen areas of osteochondral fracture including 9 loose bodies in 12 patients were diagnosed by MRI. Seven locations were found by MRI in the distal lateral femoral condyle, and 6 in patellar. MRI could clearly show the location, the size, and the depth of each osteochondral fracture, and MRI could also differentiate the articular cartilage and the subchondral of the loose body. T 2WI, STIR, and FFE-T 2WI were the best sequences to demonstrate the osteochondral fracture. X-ray showed 5 loose bodies in the knee joint, but could not detect where they came from. Conclusion MRI can accurately reveal and diagnose the osteochondral fracture of knee after trauma, which improves the diagnostic certainty and is very helpful for arthroscopy and operation. X-ray is still the initial modality in detecting the osteochondral fracture of knee and should be combined with MRI to confirm the diagnosis.